Yeah this is a bit crazy and not surprising at all.

The limits have always been opaque and you never know when they change.

I started building an open-source local proxy that logs every rate-limit header Claude Code sends.

I am using it to track and get a better sense of the 5h and 7d weekly limits.

Some initial data from 11 observed 5h sessions on Max 20x: - 5h budget: roughly $120–$280 per window - 7d budget: roughly $1,300–$1,900 - Separate Sonnet-only 7d budget at ~$150 - 95% of tokens are cache reads. They barely move the meter.

It’s open source so more people can run it and we can figure out the real numbers.

https://github.com/abhishekray07/claude-meter

Subscription business models have become a new art form thanks to Anthropic